// Create a Tab and add and additional tab to the Main Tab.
int $windowId;
int $mainTab;
 
// First create a User Window to place the Control on
$windowId = `createWindow "MyWindow"`;
 
//create a main tab controller then add a second tab the main tab
$mainTab = `createTab $windowId "Main" "Second" "Third"`;
int $secondTab = `addTab $mainTab "Fourth"`;
int $ThirdTab = `findTabItem $mainTab "Third"`;
print $ThirdTab;